Physics: Radioactivity

A brief run-through of radioactivity, but I can't be bothered to find my notes, so it will improve and there might be some mistakes.

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1. An alpha partice is actually:

  • a helium nulceus
  • a proton travelling at high velocity
  • an electron
  • a nitrogen atom
  • excess energy
1 of 8

Other questions in this quiz

2. A radioactive atom's decay is regular: it is possible to tell when a specific atom will decay.

  • False
  • True

3. An isotope of which element can be used for dating dead organisms?

  • Uranium
  • Neon
  • Oxygen
  • Carbon
  • Iodine

4. An atom with a mass of 182 and an atomic number of 90 gives out two alphas, a gamma and a beta. What is it's new mass and atomic number?

  • Mass: 174 A.N. : 90
  • Mass:174 A.N.:85
  • Mass: 174 A.N. : 87
  • Mass:182 A.N.:85
  • Mass: 180 A.N.; 95

5. After 3 half-lives an element with an activity of 1 decreases to 1/8.

  • True
  • False

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